arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0401116quant-ph
收藏

一维量子多体问题中的长程相互作用:基态

Long Range Interactions in Quantum Many Body Problem in One-Dimension:Ground State

Saugata Ghosh

摘要:

研究了一类一维$N$ -体系统的基态性质,该系统被囚禁在一个多项式势中,除了在Calogero-Sutherland模型(CSM)中研究的平方反比势外,还具有长程二体相互作用.我们表明,对于这样的哈密顿量,基态能量是类似于自由费米子在一个谐波井的位移,取决于粒子的数量和深度的井。我们得到了基态波函数,并利用随机矩阵的结果,研究了粒子密度和对关联函数(PCF)。我们观察到粒子是成带排列的。由于长程相互作用的存在,PCF显示出偏离CSM。

英文摘要:

We investigate the ground state properties of a family of $N$-body systems in 1-dimension, trapped in a polynomial potential and having long range 2-body interaction in addition to the inverse square potential studied in the Calogero-Sutherland model (CSM). We show that for such a Hamiltonian, the ground state energy is similar to that of free fermions in a harmonic well with a displacement that depends on the number of particles and depth of the well. We obtain the ground state wave function and using random matrix results, study the particle density and pair correlation function (PCF). We observe that the particles are arranged in bands. Due to the presence of long range interaction, the PCF shows a departure from the CSM.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑